The studio
TwikkelB.V.
A Dutch indie studio of one, building arcade games the slow way — in public, with care, and with the door open.
§01 · What we make
One game. Geo Climber.
A vertical-climber arcade game for iOS. You climb from Earth’s inner core to the summit of Everest, through real geological layers, chaining combos as the camera closes in from below. It’s free. There is nothing to buy. The only thing to collect is another floor.
§02 · Who’s behind it
Credited
Eyal Harush
Solo developer
- Role
- Design · Code · Release
- Stack
- Swift · Metal · TypeScript
- Pair
- Claude
Geo Climber is built by one person, with Claude as a pair programmer. The day job is leading an R&D team in fintech; the night job is this game. The goal is simple — a small, honest arcade climber you can open on a train, fall off the tower, and try again. The journal captures the whole thing as it happens.
§03 · How we build
Three working principles.
Principle I
Built in public
Every release ships with a journal entry. What worked, what broke, what's next — out in the open so players can follow the build and push back.
Principle II
Craft over noise
A small game made with care beats a large game made with hurry. We design in vertical slices, measure with screenshots, and only ship when it feels right in the hand.
Principle III
No ads, no tracking, no paywalls
Geo Climber is free because it should be. No ad SDKs, no third-party analytics, no energy meters dressed up as timers. Just the climb.
§04 · Thanks
To everyone who made this possible.
To the beta testers who filed the awkward bug reports. To the Discord regulars who kept the feedback honest. To the open toolchains — Swift, Metal, Next.js, Fastify, Prisma, Tailwind — and to Claude, without whom a studio of one stays a plan of one. None of this ships without you.